Description: Built-in high performance rechargeable Polymer battery, Long battery life and the portable charging case provides up to 9 hours. Headphones are widely compatible with iPhone 6S 6 plus, LG G5 G4 G3, ipod shuffle, ipod nano 7, Samsung Galaxy S7 S6, BlackBerry, HTC, iPad Pro, Bluetooth-enabled tablets;Perfect for Sports,Running,Jogging & Gym Exercise,Watching TV,or Sleep. Simply one press to pair / play / pause / answer or reject phone calls. Bluetooth headphone plays crystal clear audio without a hitch.Featuring CD-like sound with high technology,and noise cancellation technology enable clearer sound during calls and listening music. Sweatproof and lightweight design can guarantee you feel stable and comfortable.A Pair of Rubber ear cap keep the earbuds soft and stable on your ears. Ultra lightweight, less than 0.2oz, provide most comfortable listening experience.Specifications: Bluetooth version: 4.1. Bluetooth transmission distance: 10m. Battery capacity: 70 mAh for left and right. Charge box: 500mAh. Working time: one for 5 hours, a pair for 3.5 hours. Standby time: one for 120 hours, a pair for 60 hours. Charging time: 1 hours. Support one match two, connect 2 device. Support A2DP1.3/ HFP1.6/ AVRCP1.6/ DI1.3. Adopt the advanced CV6.0 active noise-cancellation.